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Finding the Fourth Proportional to 615,312.96, 849,109.74 and 385,993.70

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Solution

The fourth proportional to 615,312.96, 849,109.74 and 385,993.70 is: 532,657.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,312.96 : 849,109.74 = 385,993.70 : x
  2. Step 2: Convert to fraction form
    615,312.96/849,109.74 = 385,993.70/x
  3. Step 3: Cross multiply
    615,312.96x = 849,109.74 × 385,993.70
  4. Step 4: Simplify right side
    615,312.96x = 327,751,012,516.02
  5. Step 5: Solve for x
    x = 327,751,012,516.02/615,312.96
  6. Step 6: Final answer
    x = 532,657.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.